Cisco Systems's Global Supply Chain

Long-time service-provider buyer of Cisco routing for its core and enterprise networks.

Major US carrier that buys Cisco routers and resells Cisco gear in its managed enterprise services.

Designs the network gear and the Silicon One chips inside it, then has contract manufacturers assemble it.

Makes Cisco's Silicon One switch chips, including the 3nm G300 due in the second half of 2026.

Supplies merchant switch silicon used in some Nexus switches, while also competing with Silicon One.

Xeon processors power Cisco's UCS servers and many of its appliances.

Contract manufacturer that has long counted Cisco among its largest networking customers.

Another of the EMS firms Cisco has historically used to build switches and routers.